# 비누계산기 vs O'llo

The clearest difference is in-app purchases: 비누계산기 at none against O'llo's 1. 비누계산기 also leads on iOS requirement (11.0 vs 16.4). O'llo's advantage is update cadence (every 3 days vs every 46 months). On price, ads and device support there is nothing between them.

Both are free to download. O'llo sells 1 in-app purchase, starting at $4.99 per month. 비누계산기 asks for nothing beyond the download.

비누계산기 ships an update every 46 months, O'llo every 3 days. The most recent releases landed on September 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 비누계산기 | O'llo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 46 months | **Every 3 days** |
| Size | 19 MB | 78 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [(주)로하스네이처](https://appshunter.io/developer/1050085721) | [JAEWON MOON](https://appshunter.io/developer/6787824666) |

## What reviewers say

### 비누계산기

[App page](https://appshunter.io/ios/app/id1402365252)

**Features:** macOS Compatibility

**In-app purchases:** none


### O'llo

[App page](https://appshunter.io/ios/app/ollo/id6787824664)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| O'llo Pro | $4.99 | per month |


## Frequently asked questions

### Is 비누계산기 free?

비누계산기 is free to download, with no in-app purchases.

### Is O'llo free?

O'llo is free to download, with in-app purchases available.

### Do 비누계산기 or O'llo have ads?

Neither 비누계산기 nor O'llo shows ads.

### Which is updated more often, 비누계산기 or O'llo?

비누계산기 ships an update every 46 months, and O'llo every 3 days. Most recently, 비누계산기 was updated on September 24, 2026 and O'llo on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*